fix build

Author: iamacarpet

ext/opcache/tests/gt16979.phpt

@@ -5,7 +5,7 @@ opcache.enable=1
 opcache.enable_cli=1
 opcache.jit=disable
 opcache.jit_buffer_size=0
-opcache.file_cache={TMP}
+opcache.file_cache="{TMP}"
 --EXTENSIONS--
 opcache
 --FILE--

ext/opcache/zend_file_cache.c

@@ -1820,7 +1820,7 @@ bool zend_file_cache_script_validate(zend_file_handle *file_handle)
     char *filename;
     zend_file_cache_metainfo info;
     unsigned int actual_checksum;
-    void *mem;
+    void *mem, *checkpoint;
 
     if (!file_handle || !file_handle->opened_path) {
         return false;